ONE WAY TO THINK ABOUT IT
Double, then double again.
4 × 7: double 7 to make 14, then double 14 to make 28. Two pairs of equal rows show why.
Try this together
Compare the 2s and 4s at the same multiplier.
Say the complete fact, draw or build its groups, then try it again without the picture. It is fine to return to a known fact when an answer feels uncertain.